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S. V. ESSICK. PRINTING TELEGRAPH.

No. 581,677. Patented Jan. 1, 1895.

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S. V ESSICK. PRINTING TELEGRAPH No 581,677. Patentmi Jan. 1, 1895.

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S. V. ESSIGK PRINTING TELEGRAPH. N0. 531,677. Patented Jan. 1, 1895.

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UNl'TED STATES PATENT SAMUEL V. ESSICK, OF YONKERS, NEW YORK.

PRlNTlNG-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 531,677, dated January 1,1895.

Application filed April 20, 1392. Serial No, 429,831. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL V. ESSIOK, a citizen of the United States, residing at Yonkers, in the county of Westchester and State of New York, have invented certain new and usef ul Improvements in Printing-Telegraphs, of which the following is a specification.

This invention relates to improvements in printing telegraph receivers of the class known as page printers, or those wherein the message is printed upon a page or sheet of paper line by line after the manner of a typewriter.

My present invention has most particular relation to the Essick system of page printing telegraph, the patents for which are as followsz-No. 250,138, dated November 29, 1881; No. 365,059, dated June 21, 1887; No. 383,450, dated May 29, 1888; No. 443,13d, dated December 23, 1890; No. 443,135, dated December 25, 1890, and No. 443,136, dated December 23, 1890. In this system, the type-wheel is driven step by step by means of a clockwork or other motor controlled by an escapement actuated by an electromagnet responding to rapid alternations or intermissions of current over the circuit. The type-wheel executes rapid intermittent advances until the letter to be printed is brought opposite the paper, whereupon it stops by the cessation of the electric impulses, and by its stoppage a printing mechanism is brought into operation which impresses the letter against the paper. This printing mechanism consists of a platen or hammer behind the paper which strikes the paper against the type-wheel, its movement being effected or controlled by the action of an electro-magnet called the printing magnet. After each impression, the paper, which is held in a carriage movable in lateral direction, is moved one space toward the left to make room for the printing of the succeeding character. This feeding movement is effected by feeding mechanism set in operation by the printing magnet or printing mechanism. The feeding of the paper carriage is effected against the tension of a retractile device whereby when the end of a line is reached, the feeding mechanism may be disengaged from the carriage and the latter be permitted to run back to the starting point under the tension of its rotractor. This release of the sets in motion a line feeding device, by means.

of which the paper is moved upward the distance from one line to the next to leave a clear space for the printing of the succeeding line.

The transmitting and receiving instruments operate in unison, and in order to start them with like characters on the respective type-wheels facing the paper, means are provided for unisoning the type wheels. To this end the type-wheel of each instrument (and preferably also the type-Wheel shaft carrying it) is made separable from the escapementcontrolled gearing by which it is driven and constructed with a screw or equivalent device forseparating ittherefrom whenever it is permitted to rotate a certain distance, say for can ample one and a halt revolutions after the printing of the last character, and for automatically stopping it with a given point, preferably a blank space facing the paper, and holding it in this position until by the stoppage of the escapement the printing mechanism is caused to act, whereupon the typewheel is re-engaged to the escapement-controlled gearing, and as this operation occurs simultaneously at both stations, both the receiving and transmitting type-wheels subse quently move in unison so as to print like characters at both stations.

According to my present invention, instead of carrying the paper in a carriage moving step by step toward the left to feed the paper past the type-wheel after each printing operation, I mount the paper in a stationary holder or frame of any suitable construction by means of which the paper may be fed upwardly but not laterally, and I provide means for feeding the type-wheel toward the right after each printing operation, preferably by mounting itto slide along the type-wheel shaft while remaining rotatively engaged therewith, a moving part or carriage being provided in engagement with the type-wheel for imparting to it these feeding movements, and a feeding mechanism being provided for imparting to this carriage the requisite step by step movements toward the right, and for releasing it and permitting it to return to the starting point after each line is completed.

By means of my present improvement the message being printed is more easily read, by reason of the paper being stationary, than when the paper is executing leftward movements in quick succession, followed by a sweeping movement to the right at the end of each line. The upward feeding of the paper between the lines is also facilitated, since the paper, which is fed in an endless strip from a reel beneath, remains always in line with the reel instead of moving laterally back and forth so that at only one position is it in line with the reel.

My invention also provides an improved means for feeding the paper upward after printing each line, the same consisting of a line feed mechanism engaging the paper, actuated by an electro-magnet in a local or other circuit or branch thereof, which is closed or otherwise controlled automatically by the return movement of the carriage to its initial position. The line feeding magnet may itself supply the energy for operating the line-feeding mechanism, or it may control the operation of this mechanism under the impulse of an independent motive power or motor device.

According to my invention, a motor device or source of power, preferably a clock-work, is employed to actuate the type-wheel shaft, imparting thereto a constant tendency to forward rotation, which is restrained and the movements of the type-wheel controlled by an escapement actuated by the type-wheel magnet. The printing and feed mechanisms are also operated by a constantly acting source of power or motor device, preferably a clock-work, which is preferably independent of that actuating the type-wheel shaft, and which is restrained and controlled by an escapement actuated by the printing magnet. Thus the comparatively heavy work of advancing the type-Wheel, and of making the impression and performing the feed preparatory to the next impression, is done by proportionately energetic sources of power, and the type-wheel and printing magnets have only to perform the light work of restraining and controlling the application of motive power to perform these operations.

Figure 1 of the accompanying drawings is a front elevation of my improved printing telegraph receiver. Fig. 2 is a plan thereof partly in horizontal section on the line 22 in Figs. 1 and 4. Fig. 3 is an elevation thereof from the right hand side. Fig. at is a vertical transverse section looking in the same direction as Fig. 3, and cut in the plane of the line 44 in Figs. 1 and 2. Fig. 5 is a fragmentary sectional view looking in the same direction, a portion of the frame and certain working parts being omitted to show more clearly the parts illustrated. Fig. 6 is a vertical transverse section in the plane of the line 66 in Fig. 1. Fig. '7 is a diagram showing the preferred circuit connections. Fig.8 is a fragmentary section plan of the type-wheel, shaft and connections.

Let A designate in general the fixed frame of the instrument, which is provided with uprights a a, 8410., providing bearings for the working parts.

B is the type-wheel, and O the type-wheel shaft or spindle journaled in the frames 0. a, and carrying a pinionb meshing with a pinion b on an escapement shaft 0 carrying an escape-wheel c, which is engaged by the pallets of an anchor c carrying the armature of the type-wheel magnet M, shown best in Fig. 7. This is preferably a polarized magnet of any suitable construction, such, for example, as that shown.

The type-wheel shaft is driven by a motor mechanism or source of power consisting preferably of a clock-work train lettered as a whole T, which imparts to the shafts O and O a continual tendency to forward rotation, which is restrained by the action of the escapement. In the construction shown, this motor consists of a clock-work comprising a drum 1O actuated by a spring or weight, its gear 11 meshing with a pinion l2 fixed to a gear 18, which drives a pinion 14 fixed on a shaft 61 carrying a gear 15 meshing with a pinion 16 fixed on the shaft 0, from which the type-wheel shaft (J is driven through pinions Z) b; but any other arrangement of gearing, or any other equivalent means for imparting a forward rotative tendency to the type-wheel shaft may be substituted.

The magnet M might be introduced in the line circuit, but is preferably arranged in a local circuit, as shown in Fig. 7, in either case being operated by successive currents or impulses of alternating direction. As the number of teeth in the escapement wheel 0 corresponds to the number of characters on the type-wheel, a given number of electric impulses over the line will cause the escapement anchor to execute a given number of vibrations, and the type-wheel to move forward an equal number of characters, stopping when the pulsations over the line are interrupted.

The sheet of paper being printed is shown at 00. It is held in a paper holder of any suitable construction,that shown consistingof two upright strips 6 e grooved to engage the opposite edges of the paper. The sheet of paper is thus held in preferably a vertical plane just behind the-type-wheel, the surface of the paper nearly touching the latter, it being preferably held slightly out of contact with the type-wheel by a very flexible spring-arm e extending upward between the type-wheel and the paper, as shown in Fig. 4.

The printing is effected by a platen arranged on the rear side of the paper and constructed to move forward and press or strike the paper against the type-wheel, thereby pressing back the light spring e and causing the character presented to the paper to be impressed upon it through an opening in the spring, which opening serves to prevent the impression of any of the adjoining characters. This platen 1) consists of a horizontal bar extending behind the paper along the line being printed. It is carried by arms D D fixed on an oscillatory printing shaft E extending longitudinally and parallel with the type-wheel shaft, and having bearings in the frame. This shaft is acted upon by a spring 3', shown best in Fig.5, which normally holds the platen retracted. The mechanical power for performing the printing operation is profvided by a motor mechanism consisting preerably of a clock-work train T, shown at the left of the instrument, and consisting in the construction shown of a spring drum 2O having a gear 21 meshing with a pinion 22 fixed to a gear 23 driving a pinion 24 fixed on a shaft g having fixed to it a gear 25 driving a pinion 26 on a shaft f, which has bearings 'at one end in the frame a, and at the other in a block f mounted on the frame a The shaft carries a cam F, which at each revolution of the shaft, moving in the direction of the arrow in Fig. 5, strikes upwardly an arm E fixed on the printing shaft E, so that this shaft executes a slight oscillatory movement and causes the platen D to strike a blow pressing the paper against the type-wheel. The clock-work T imparts to the shaft f and cam F a continual tendency to rotate, and is restrained by an escapement consisting of an escape-wheel g fixed on the shaft 9 and engaged by an'escapement anchor shown in dotted lines in Fig. at, but more clearly shown in Fig. 7, Where it is lettered 9 This anchor is mounted on or connected to the armaturelever of the printing magnet M, the armature of which is drawn away by a retracting spring 9 The proportions of the escapement-wheel g and the gears 25, 26 are such, that a single release of the escapement permitting the escapement wheel to move from one tooth to the next, causes the shaft fto execute one entire revolution.

Any other construction of escapement that will effect the same result might be substt tuted, it being only essential that the cam F shall act once whenever the printing magnet M is energized, thereby oscillating the printing shaft and causing the platen to strike the paper against the type-wheel.

The printing magnet M may be variously actuated, as for example according to the means shown in my previous patents hereinbefore referred to. In the arrangement shown in the diagram, Fig. 7, it is a slow charging magnet having long cores, and being so proportioned that during the rapid alternations of current by which the polarized magnet M is actuated, it remains demagnetized, the rapidly succeeding pulsations in opposite directions neutralizing each other in their effect upon it, but upon the cessation of the alternation of impulses, thereby leaving the cirunit with a continuous current flowing in either direction, it charges up or becomes energized and attracts its armature, thereby operating the escapement g g and releasing the printing mechanism in the manner described. Thus the printing mechanism is released each time that the type-wheel stops by reason of the cessation of the alternating electric impulses governing the type-wheel magnet.

The sheet of paper being stationary in lateral direction, the type-wheel B is caused to travel or feed toward the right after each impression. To admit of this, it is so mounted as to be movable in direction longitudinally of the axis of the type-Wheel shaft. This might be accomplished in different ways, but the preferred construction is to mount the type-wheel upon its shaft so as to be capable of sliding longitudinally thereon, while re maining connected to the shaft in rotative direction. Thisisbestaccomplished byspliningor feathering the type-wheel uponits shaft, as by forming the shaft with a longitudinal groove or keyway, and providing the wheel with a key or spline entering and sliding freely in this groove, as shown in Fig. 8.

To hold the type-wheel in proper position and communicate to it the requisite feeding movements, I provide any suitable moving part movable in direction parallel with the axis of the type-wheel shaft, and which I will call a carriage. This carriage, lettered G, consists in the construction shown of a 1ongitudiua-l rack-bar h formed with rack-teeth on its upper side and mounted to travel on anti-friction rollers 2' t", of which three are shown in Fig. 1, by which it is guided and caused to move with the minimum of friction, and of a backwardly projecting arm h having a forked portion engaging a hub on the type-wheel, as shown in Fig. 8, and extending also downward to form a means for the attachment of the spring e already described. The carriage also has connected to it an arm Wearrying an inking roller B which rests lightly in contact with the upper side of the type-wheel B, as shown in Fig. 4:, to apply ink to the type thereof. The carriage G being thus arranged so as to move from right to left, has imparted to it a normal tendency to move toward the left in Figs. 1 and 2, by means of a cord or other flexible connectorj attached to it and winding upon a spring drum J containing a coiled spring which exerts a tension in the direction of the arrow in Fig. 1, tending to wind the cord upon it and pull the carriage toward the left, or to the position for starting a line of printing.

For feeding forward the type-wheel after each impression, a feed mechanism is provided consisting of the shaftf, and the means for driving and releasing it already described, with a worm l-I fixed on or driven by this shaft and engaging with the teeth of the rack bar it. Since this shaftfexecutes one revolution to each impression, the pitch of the worm ii, and of the teeth of the rack-bar h are such, that a single revolution of the worm will advance the carriage, and consequently the type-wheel, the proper distance for the spacing between the successive letters. It results that each time the printing magnet acts, and the shaftf executes a revolution, the cam F acts to cause the platen to strike the paper against the type-wheel, and the worm I-I acts to feed the carriage G and consequently the type-wheel forward or to the right one space. It is immaterial whether the printing impression is first made and the feeding movement occurs thereafter, or the type-wheel is first fed forward and the impression then made, or whether both operations proceed simultaneously.

The feeding movement is comparatively slow, while the impression is caused by a quickblow, so that if the impression is made while the type-wheel is moving, no'perceptible blurring will ordinarily result, but to avoid the possibility of any blurring, the screw-thread of the worm H may be made sinuous, being concentric or without pitch at the instant that the impression is made, so that the type-wheel is held stationary at this instant, and of sufficiently increased pitch for the remainder of its circumference to compensate for the time lost during this dwell of the type-wheel.

When the end of the line is reached, or whenever it is desired to commence a new line, the carriage G is released and permitted to roll back to the left under the impulse of the spring drum J, thereby carrying the typewheel back to the beginning of the line. This releasing is effected by lifting the worm H out of the teeth of the rack-bar.

The block f is made vertically movable, sliding upward on two pins 21 Fig. 3, fixed in the frame a. By thus sliding up this block, the right-hand end of the shaftf is lifted sufficiently to clear the worm from the teeth of the rack-bar. This action occurs whenever the type-wheel is caused by the continuance of the alternating pulsations upon the line to revolve for more than a certain dis tance beyond the printing of the last character, say for example two revolutions. This is effected in the following manner: Upon the shaft 61 of the train or motor T, is fixed a pinion 7c partly shown in Figs. 1 and 2, but clearly shown in Fig. 5. Whenever the typewheel revolves, this pinion also revolves, but at a much slower speed, in the direction of the arrow in Fig. 5. In so doing, it propels forward a rack-bar k, the teeth on which are normally in'mesh with it. As long as the type-Wheel continues to rotate, this rack-bar, starting from the position shown in Fig. 5 continues to travel forward until upon the stopping of the type-wheel the printing operation is performed. By this operation the rack-bar is lifted sufficiently to free its teeth from the pinion It, whereupon it is instantly pressed back to the normal position by a spring 8. As the printing shaft E oscillates to perform the printing operation, an arm fixed upon it moves upward and by means of a pin projecting from its end, lifts an arm a fixed to the rack-bar 70', thereby lifting the latter and tiltingit on its pivot M. This forward movement of the rack-bar occurs at every advance of the type-wheel, and its release and restoration to its starting point at every printing operation. The movements of the rack-bar are communicated by a slotand-pin connection Z or otherwise to an arm Z fixed on a rock-shaft L, which extends across the front of the instrument and carries at its opposite end a cam-arm L, the cam-shaped upper face of which engages a pin f projecting from the block f, as shown in Figs. 3 and 4:. At each forward movement of the rack-bar 7c the shaft L is correspondingly oscillated, and if the movement becomes sufficient, the cam-arm L engage and lifts the pin and block.

In the ordinary printing operation, the forward movement of the rack-bar 7c is very slight because the type-wheel revolves not more than one revolution, and the slight movement thus imparted to the rock-shaft L is insu fficient to lift the block, or at least does not lift it sufficiently to raise the worm 1-1 out of engagement with the rackbar h; but by an abnormal duration of the movement of the type-wheel the rack-bar k is caused to travel forward an abnormal distance, thereby rock ing the shaft L to a sufficient angular extent to cause the cam-arm to lift the pin, and consequently the worm H sufficiently to lift it clear of the teeth of the rack-bar h on the carriage, thereby freeing the carriage and enabling it to be run back to the starting position by the tension of its restoring spring. The particular mechanism shown in Figs. 5 and a for accomplishing this result, is in general the same that I have before employed for disengaging the feed mechanism from the paper carriage, and is hence no longer new. This particular mechanism is not essential, as it may be substituted by any other mechanism comprising a moving part which is set in motion from a starting position each time the type-wheel resumes its forward rotation after the printing operation, and which moves proportionately to the type-wheel, and the abnormal movement of which corresponding to the movement of the type-wheel in excess of one revolution (or preferably in excess of one and a half revolutions) is communicated to the feed mechanism which propels the carriage to disengage this mechanism from the carriage and set/the latter free so that it may return to its starting point.

The unisoning device is the same as that heretofore employed in my printing telegraph instruments and which has been fully described in my previous patents. The pinion 1) turns loosely on the shaft 0, being locked thereto by a clutch pressed into engagement by a spring 8 Fig. 2, the boss of this clutch carrying a unison worm n which is engaged by the end of an arm n projecting from the printing shaft E, except when this arm is thrown up in the act of printing. After each printing impression the arm it drops into engagement with the worm, and as the printing shaft afterward advances it causes the worm to travel toward the left, thereby moving the clutch-boss against the tension of spring 5 in direction to disengage itself from pinion b; but this disengagement is not effected unless the type-wheel executes more than a complete revolution. In such case the clutch disengages itself, permitting the pinion b to continue its revolution, while the printing shaft and wheel are held stationary by the engagement of a pin on the end of arm n with the worm oftheclutch,thus holding thewheelwith a certain character (preferably a blank space) facing the paper, until by the cessation of the action of the escapemeut the printing magnet is energized, and in performing the printing operation the arm n is lifted and disengages the clutch, whereupon the latter instantly recngages itself with the pinion h under the stress of the spring 3 The duration of forward movement of the type-wheel necessary for operating the unison device, is less than that required to restore the carriage for commencing another line, in order that the typewheel may be unisoned at any time in the course of the printing of a-line. By making the unison point on the type-wheel coincidentwith a space or blank, and using this as the space between words, the type-wheel is unisoned after completing each word, as well as at the end of each line.

After printing a line and restoring the carriage to print the next line it is necessary to feed the paper upward for the feed between the lines. This line feed in my previous instruments has been effected by a lever carried by the paper carriage, engaged by an inclined or cam surface during the return movement of the carriage so that it is thereby vibrated, and carrying a pawl which by its vibratory movement propels forward a ratchetwheel, which turns the feed-rollers engaging the paper. This same device might be applied to my present construction by mounting the lever on the stationary framework and providing the carriage with an inclined or cam surface acting upon the lever. My invention, however, provides an improved line feed movement, shown best in Fig. 6. An electro-magnet M is fixedly mounted, and its armature m is connected through a rock-shaft with a lever-arm 32 carrying a pawl 19' engaging the teeth of a ratchetwheel q fixed on the same shaft as the serrated feed-wheel q arranged back of the sheet of paper, the paper being pressed against it by a roller 1" mounted on an arm T which is pressed toward the paper by a spring T The armature and lever-arm p are normally retracted by a spring m. After the printing of each line, and upon the restoration of the carriage to its starting point, the magnet M is energized and attracts its armature, thus causing the lever 19 to actuate the pawl and ratchet, and rotating the feed rollers so as to feed the paper upward the required distance. For energizing the magnet, it is connected in a circuitor branch circuit in which are also included circuit closingsprings or contacts 7. t, Figm2, which are pressed together by an arm 15 carried by the carriage, and projecting snfficiently to touch them and press them together when the carriage reaches its extreme leftward movement, thus closing the circuit and energizing the magnet. The first forward or feeding movement of the car riage upon the printing of the first character of the line, releases the springst 2550 that they flyapart and break the circuit, whereupon the magnet M releases its armature, and the ratchet and pawl are retracted in readiness for the next feeding movement. This line feeding mechanism has the advantage that the feed of the paper is positive and independent of the momentum of the carriage during its retractile movement,and independent also of the tension of the spring which retracts the carriage. A newline may be commenced at any time after printing the first character of a line, it being unnecessary to cause the carriage to travel for approximately a quarter of the length of a line as heretofore, in order by its return movement to cause the line feed to act properly to advance the paper.

Although as l have stated the electromagnets M M may be introduced directly in the line circuit, it is nevertheless preferable in ordinary practice, and especially where long circuits are employed, or where numerous instruments are operated on a single line circuit, to provide a local circuit for directly operating the magnets controlled by a polarized relay introduced in the line. One suitable arrangement of circuits is shown in Fig. 7, where aportion of the line circuit is shown by a dotted line. In this line circuit is introduced a polarized relay P, the armature-lever of which vibrates between contacts u u forming the terminals of branch circuits 30 and 31, including respectively two alternately acting local batteries Q Q relatively reversed in polarity, and both joined to a single wire 32 of the local circuit which traverses the coils of the magnet M, and is continued by a Wire 33 traversing the coils of the printing magnet M, the circuit being completed by wire 34 leading to the armature-lever of the relay. A positive current over the line swings the armature-lever for example to the left, causing a positive current from battery Q to traverse the local circuit, while a negative current over the line swings the armature-lever to the right, causing a current of negative direction from battery Q to traverse the local circuit.

Other arrangements of batteries and polechanging relays may be substituted for the one shown. For operating the magnet M a normally open branch circuit or derivation 35, 36, is provided broken at the springs t 16. When these springs are pressed together, this IIO branch is closed and a current from eitherbattery whichever is at the moment in connection, traverses the magnet M to energize it.

In my present construction, the platen D differs from the platen heretofore employed by me in my printing instruments. lleretofore the platen has been constructed as a hammer having its face of approximately the size of the character to be printed, and caused to strike the rear of the paper and press the latter against the type-wheel. The typewheel being stationary, this platen has also been stationary. In my present construction, the type-wheel being movable so as to print at different points along a horizontal line, the platen, if of the same construction as heretofore, would necessarily have to be so mounted as to move or travel along from left to right with the type-wheel. This might be done, but would involve a degree of complication that it is preferable to avoid. I therefore construct the platen as a bar prolonged in the direction of the travel of the type-wheel, so that at any position of the latter the bar will strike the paper against the type-wheel, and I mount this bar on a shaft in stationary bearings so that it has no feeding movement.

In lieu of employing a worm and rack-bar for feeding forward the carriage, other feeding mechanisms may be substituted, various mechanical constructions being known in the arts which constitute mechanical equivalents of the rack and worm gear. It is only essential that the feeding mechanism shall act to forcibly impel the carriage the distance of one space or character at or after each printing impression. It is also essential that some means he provided for disconnecting the feeding mechanism from the carriage when it is desired to restore the latter to its starting point for commencing a new line. Itis preferable to provide the carriage with a retractile device for automatically running it back to the starting point when freed, and to cause the feeding mechanism to feed it forward step by step against the tension of this retractile device, but it is not essential that the retractile device shall exert a continual tension against the carriage opposing the forward feeding movement thereof by the feeding mechanism, it being only essential that the retractile device shall act to return the carriage to its starting point when the feeding ation of the instrument requires it to execute a movement.

My invention is not essentially limited to the use of the mechanismsherein described for printing telegraph receiving instruments, as my invention involves certain features which might advantageously be employed in typewriters and analogous printing instruments where the printing instrumentalities and paper are required to be fed or propelled from a source of power-controlled by key mechanism, and it is my intention that myclaims to such features of my invention shall be of such scope as to include its application to instruments of this character.

In printing telegraphs, I propose employing my receiving instrument in connection with a transmitting key-board, as in certain of my hereinbefore recited patents,in order to print at the transmitting station a copy of the message being sent. In such case the instrument may be controlled electrically the same as the instrument at the receiving station, or it 9 0 may be controlled mechanically by direct connection with the transmitting key-board, as in some of my said patents. In the latter case, such mechanical control constitutes an equivalent-of the escapement for the deter- I mination of the movements of the type-wheel.

My invention is not limited to the use of two independent sources of mechanical power, as the entire mechanism might be propelled from a single source of power, as for example, by a spring drum acting through trains of gears controlled by the respective escapements.

I claim as my invention the following-defined novel features or improvements, substantially as hereinbefore specified, namely 1. In a printing telegraph receiver or analo' gous printing instrument, a type-wheel carried rotatively by a shaft, controlling mechanism for determining its forward rotation, a carriage connected to the type-wheel and movable to feed the latter across the face of a stationary sheet of paper, a mechanical motor constituting a power-impelled feeding device exerting a constant stress tending to propel the carriage forward to advance the type- Wheel, and an escapement for controlling said feeding device and thereby determining the feeding movements of the type-wheel.

2. In a printing telegraph receiver or analor 20 3. In a printing telegraph receiveroranalogous printing instrument,a type-wheel carried rotativoly by a shaft, controlling mechanism for determining its forward rotation, a carriage connected to the type-wheel and movable to feed the latter across the face of a stationary sheet of paper,a power-impelled feeding mechanism, controlled by an escapement, for propelling the carriage forward to advance the type-wheel, mechanism operated by an abnormal rotation of the type- Wheel for disconnecting said feeding mechanism from the carriage, and retracting means for returning the feed carriage to its starting point to commence a new line.

a. In a printing telegraph receiver or analogous printing instrument, a typewvheel carried rotatively by a shaft, controlling mechanism for determining its forward rotation, a carriage connected to the type-wheel and movable to feed the latter across the face of a stationary sheet of paper, a power-impclled feeding mechanism, controlled by an escapement, for propelling the carriage forward to advance the type-wheel, mechanism operated by an abnormal rotation of the typewheel for disconnecting said feeding mechanism from the carriage, consisting of a pinion revolving with or proportionately to the type-wheel, a traveling rack-bar advanced by said pinion at each rotation thereof a distance proportioned to the extent of its rotation, and automatically returning to its starting point at each stoppage of the pinion connected to thefeeding mechanism and adapted by its extent of movement to disconnect the same from the carriage, and retracting means for returning the carriage to its starting point.

5. In aprinting telegraph receiver or analogous printing instrument, a type-wheel carried rotatively by a type-Wheel shaft geared to a continuously-acting source of power, a paper holder, a carriage connected to the typewheel and adapted to feed the latter across the face of a sheet of paper in said paper holder, geared to a second continuously-acting source of power, escapements for the typewhcel shaft and carriage, a printing platen carried by a printing lever mechanically connected to the second source of power, and mechanical and electrical connections whereby printing is effected in page form.

6. In a printingtelegraph receiver or analogous printing instrument, a type-wheel, a feeding carriage therefor, and an actuating motor provided with an escapement for operating each, a retractor for moving said carriage backward, feeding mechanism for advancing said carriage line by line, and mechanical connections between the type-Wheel and said feed mechanism for disengaging the latter from the carriage at any point in the forward movement, to permit the carriage to be retracted at any part of a line to commence a new line.

7. In a printing telegraph receiver or analogous printing instrument,a type-wheel, a feeding carriage therefor positively connected to a power-impelled train of gears through a rack and worm gear, in combination with mechanism for releasing the worm from the rack at any part of its journey, said releasing mechanism consisting of a canrlever and rockshaft, and mechanical connections with a power-impelled train of gears, additional means being provided for returning the carriage to its starting position when released.

8. In a printing telegraph receiver or analogous printing instrument of the page type, a typewheel, a feeding carriage therefor having a rack engaged by a worm connected to a source of power, a retractor connected to the carriage and exerting a tonsionfor restoring itto its starting position, releasing mechanism consisting of a rock-shaft and cam lever for disconnecting said worm from said rack, a stationary paper holder, and a line feed mechanism adapted to feed the paper from one line to the next upon the restoration of the carriage.

9. In a printing telegraph receiver or analogous printing instrument, a type-wheel, a printing mechanism, a movable carriage, a feeding mechanism therefor, and means for returning the carriage to its starting point from any point on a line to begin a newline, in combination with a line feed for the paper consisting of an electro-magnet, a feeder engaging the paper and actuated by the excitation of the magnet to feed the paper, an electric circuit including said magnet, and a circuitcloser for controlling the excitation of said magnet arranged to be operated by the return of said carriage to its starting point upon completing the printing of a line.

10. In a printing telegraph receiver or analogous printing instrument, the combination of a typewheel, a carriage connected to the type-Wheel and movable to feed the latter, printing and feeding mechanisms, means for returning the carriage from any point on a line to its starting point to begin a new line, a stationary paper holder, and a line feed for the paper, the latter consisting of an electromagnet, a paper feeder moved by the excitation of said magnet and adapted to engage the paper and feed it in said holder, an electric circuit for energizing said magnet, and a circuit-closer in said circuit arranged to be operated by impact from said carriage upon the restoration of the latter to its starting point to commencea new line.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

SAMUEL V. ESSIOK.

Witnesses:

GEORGE H. FRASER, CHARLES K. Fansna. 

